> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/api-and-command-reference/scra-dynafamily-programmers-manual/appendices/appendix-e-physical-button-dynaflex-only.md). # Appendix E: Physical Button (DynaFlex Only) Every DynaFlex device features a single physical button. On the DynaFlex II Go, this button is located on the left side of the device. For all other models, it is located on the bottom of the device near the USB port. Pressing and holding this button can activate additional functions on the device. To active a specific function, press and hold the button until a specific number of beeps are heard. Table G8.7-48 shows which functions can be activated. Beep counts that are not listed are not supported. ## Table PB-1 – Button Functions
Beep CountFunction

2

Power Off

Power the device off, The device will reboot if it is connected to USB.

3

WLAN Setup

WLAN devices only.

4

BLE Pairing

BLE devices only.

5

Demo

See Appendix C for more information.

6

Battery Level

Light the LEDs to indicate the current state of charge of the battery. The LEDs will light for 3 seconds then return to their original state.

The DynaFlex II Go has only green LEDs. Instead of lighting the first LED in amber, it will slowly flash the first LED. Instead of Red, the first LED will flash quickly.

## Battery Charge Status As mentioned in Appendix G Physical Button (DynaFlex Only), there is only one physical button on DynaFlex devices. Pressing and holding this button until the device beeps six times then releasing it causes the LEDs on the front of the device to display the current charge state of the battery. The LEDs will return to their previous state after three seconds. ## Table PB-2 - Battery Charged Example
Battery LevelTransactions and Firmware Update AllowedLED ColorLEDs On When Button is Pressed
100% - 90%YesGreen4 LEDs
89% - 70%YesGreen3 LEDs
69% - 50%YesGreen2 LEDs
49% - 20%YesAmber1 LED
19% - 6%YesRed1 LED
5% - 0%NoRed1 LED
The DynaFlex II Go has only green LEDs. Instead of lighting the first LED in amber, it will slowly flash the first LED. Instead of Red, the first LED will flash quickly --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://developer.magtek.com/api-and-command-reference/scra-dynafamily-programmers-manual/appendices/appendix-e-physical-button-dynaflex-only.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.